Finding the Fourth Proportional to 111.52, 153.93 and 67.87

Step by Step Solution

1. Step 1: Write the proportion equation
   111.52 : 153.93 = 67.87 : x
2. Step 2: Convert to fraction form
   111.52/153.93 = 67.87/x
3. Step 3: Cross multiply
   111.52x = 153.93 × 67.87
4. Step 4: Simplify right side
   111.52x = 10,447.23
5. Step 5: Solve for x
   x = 10,447.23/111.52
6. Step 6: Final answer
   x = 93.68